US3868563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage regulator for generator
Assignee: Mitsubishi Electric Corp
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Filing: 1968-12-30
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Granted: 1975-02-25
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Expires: 1988-12-30
Abstract
Abstract A rectified output voltage from an ac generator is applied to a fixed resistor and a variable resistor serially connected with the voltage below a predetermined magnitude, an excitation is applied to the generator through a transistor in conducting state. Upon the voltage exceeding that magnitude the transistor become nonconducting through conduction of a transistor and a reference diode element serially connected across the fixed resistor to interrupt the excitation. The fixed resistor, the last-mentioned transistor and the reference element with or without the first-mentioned transistor are formed into an integrated circuitry. The variable resistor is outside of the circuitry.
Inventors
- 👤 Tsuyoshi Hirata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:12
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/16; H02J7/24; H02J7/243
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
208 words
A voltage regulator circuit for a generator having an exciting circuit comprising: a. a first transistor and a second transistor, said first transistor and said second transistor each having a pair of conduction electrodes and a control electrode; b. a first resistor; c. means connecting a first conduction electrode of said first transistor, a first conduction electrode of said second transistor, and said first resistor to a common node; d. a diode connected in series with said first resistor and the control electrode of said second transistor, said diode and said first resistor having a common junction therebetween; e. a second resistor connected to the common junction of said first resistor and said diode; f. a third resistor; g. means connecting the control electrode of said first transistor, the second conduction electrode of said second transistor, and said third resistor to another common node; h. means applying in use an input voltage from a generator to be regulated to the first mentioned common node; i. means defining a circuit path from the second conduction electrode of said first transistor to an exciting circuit of the generator; and j. means defining a common conductive path between said second resistor, said third resistor, and the exciting circuit of the generator.
Claim 2
Dependent Claim
208 words
A voltage regulator circuit for a generator having an exciting circuit comprising: a. a first transistor and a second transistor, said first transistor and said second transistor each having a pair of conduction electrodes and a control electrode; b. a first resistor; c. means connecting a first conduction electrode of said first transistor, a first conduction electrode of said second transistor, and said first resistor to a common node; d. a diode connected in series with said first resistor and the control electrode of said second transistor, said diode and said first resistor having a common junction therebetween; e. a second resistor connected to the common junction of said first resistor and said diode; f. a third resistor; g. means connecting the control electrode of said first transistor, the second conduction electrode of said second transistor, and said third resistor to another common node; h. means applying in use an input voltage from a generator to be regulated to the first mentioned common node; i. means defining a circuit path from the second conduction electrode of said first transistor to an exciting circuit of the generator; and j. means defining a common conductive path between said second resistor, said third resistor, and the exciting circuit of the generator.
Claim 3
Dependent Claim
26 words
A voltage regulator circuit according to claim 1 further comprising a second diode having means connecting said second diode in series with the first mentioned diode.
Claim 4
Dependent Claim
15 words
A voltage regulator circuit according to claim 1 wherein said diode is a Zener diode.
Claim 5
Dependent Claim
16 words
A voltage regulator circuit according to claim 1 wherein said second resistor is a variable resistor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |